<div class="logo"></div>
<ul nz-menu [nzTheme]="'dark'" [nzMode]="'horizontal'" style="line-height: 64px;">
  <li nz-menu-item>
    <button nz-button [nzType]="'primary'" (click)="togglecollapsed()">
      <i class="anticon" [class.anticon-menu-unfold]="isCollapsed" [class.anticon-menu-fold]="!isCollapsed"></i>
      <span>菜单</span>
    </button>
  </li>
  <li nz-menu-item>nav 1</li>
  <li nz-menu-item>nav 2</li>
  <li nz-menu-item>nav 3</li>
</ul>

